EPICS Digital I/O

This is a Python class which allows the control of a set of digital I/O ports defined by the user. Ports are named with a common prefix followed by its number. Once it is based on EPICS resources, one can get and set PV values related to the ports. Its also possible to add and delete ports from the set, and list their names.

Using EPICS Digital I/O module

Usage of Python class for EPICS Digital I/O control

class py4syn.epics.DigitalIOClass.DigitalIO(digitalIO_prefix, port_type, port_sequence)

Class for Digital I/O using EPICS.

Constructor

Parameters:

digitalIO_prefix : string

Prefix of the ports.

port_type : string

‘INPUT’ or ‘OUTPUT’.

port_sequence : string

Index of the ports. Example: ‘0-3;7’ means ports from 0 to 3 and 7.

addPorts(port_sequences)

Add ports to name and PVs dictionaries.

Parameters:

port_sequences : string

Index of the ports to be added.

deletePorts(port_sequences)

Delete ports from name and PVs dictionaries.

Parameters:

port_sequences : string

Index of the ports to be deleted.

getName(port_index)

Returns the name of a port PV.

Parameters:

port_index : int

Index of the port.

getValue(port_index)

Returns the current value of a port PV.

Parameters:

port_index : int

Index of the port.

list()

Lists name of all ports in use.

putValue(port_index, new_value)

Set a new value for a port PV.

Parameters:

port_index : int

Index of the port.

new_value

New value of the port PV.